#include <iostream>
#include <string>

int main()
{
    std::cout << "hello world" << std::endl;
    std::string msg("hello world");
    std::size_t position = msg.find("say");
    std::cout << position << std::endl
              << std::string::npos << std::endl;

    using string = const char *;
    string name = "alice";
    
    return 0;
}